Belt pulley



FIG. 1 is a front perspective view of a belt pulley showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a sectional view thereof, taken from lines 8--8 in FIG. 5. 

I claim the ornamental design for a belt pulley, as shown and described. 